Mac's don't need defragging as OS X automatically writes 2Gb or below sized files to one contiguous space on the drive. There are certain cases where's it's needed to free up a large spaces on the drive, but not something everyone has to do.
Far as other Mac maintainence, there really isn't any except to backup one's files regularly. Keeping Software Updated and run a web browser check to make sure the plug-ins are current.
Airmail 3 is a must-have app for Mac users with multiple email accounts. The email client has a beautiful design, which integrates perfectly with the macOS Mojave interface. It’s intuitive to use, too. The app supports all major email services. Apple Mail, also known simply as the Mail app, is the default email client on macOS. As is characteristic for apps from Apple, the Mail app is a simple, polished piece of software designed to streamline your email conversations and make your life easier with search filters and support for multiple email accounts.
For Safari and Flash, this check is more accurate
Most of those cleaning programs are junk, especially MacKeeper.
If your friend got onto your computer and visited a bunch of adult sites, then I would recommend something like OnyX, doing ALL the cleaning and maintenance aspects and rebooting, perhaps followed by a Disk Utility Erase free space.
CCleaner beta is out for OS X, used on PC's and combines cleaning and scrubbing of the drive if setup correctly.
If your interested in performance, read my post here
Oct 1, 2011 12:37 AM
When you buy your first Mac or MacBook you will be a bit overwhelmed by how different macOS is in comparison with other operating systems. So to get started right away you will need some free apps that can help you do basic stuff like write text or edit photos.
There are many apps for Mac which are very useful. Here are some FREE amazing apps that will make your life better:
1. Image Frame
If you need an application that helps you improve your photos, Image Frame is one of the best in the business. This app comes with 50 frame designs, 7 artistic image effects and the possibility to convert and resize the images in batch mode. You can download Image Frame for free on the Mac App Store.
2. Audacity
One of the apps on the Mac App Store that can help you modify audio content is Audacity. This app can cut or arrange sections in your audio content and it can even remove the noise from recordings. It might not be a masterpiece, but Audacity gets the job done.
3. GIPHY Capture
This app is pure gold for GIF enthusiasts. All you need to do is position the GIPHY screen over what you want to record and you can create a GIF. It’s very easy to use and a great tool for anyone.
4. Google Photos
Google Photos is a free app that helps you upload as many photos or videos as you like for free. The user just needs to have a Google account or create one otherwise. Also, Google Photos has the ability to identify photos automatically using a neural network.
5. LibreOffice Writer
This app opens .doc and .docx files and it can provide you a multitude of ways to style and format a document. Also, you can download different extension that will make you use this app very often.
6. myTuner Radio
If you are a music lover, this app is perfect for you. You can save your favourite radio stations from anywhere in the world, and listen to them anytime.
Best Apps For Mac Support Windows 10
7. Photo Effects (Lite)
There are a lot of effects that you can apply to your photos using the tools that macOS offers you, but if you would like some more you should download Photo Effects. You can play with the intensity of the effects turning them up or down, and then enjoy your creation.
8. Shazam
Shazam is an amazing app for iOS that helps you find out what track is playing instantly. If you are a fan of this app you can also find it now on the Mac App Store. What makes the Mac version of Shazam more special is the possibility of putting the app in AUTO mode so it can identify music at all times so you can listen to it later on.
9. SketchBook
If you are talented or you just want to create a painting, you can do it using SketchBook for free. You will find a lot of painting tools and some great animations that will help you create some amazing drawings.
10. Who’s On My WiFi
That is a question many of us are asking. This app helps you find out who is using your WiFi connection with or without your permission. So, if you have a person who is using your connection abusively without you knowing, you will find out immediately who he is.
11. VLC
If you can’t view certain videos, VLC is the perfect app for you. It can also play the same audio contents that iTunes and QuickTime can play. Also, it’s very versatile and it supports a lot of formats.
12. WhatsApp Desktop
If you are a WhatsApp user on your phone you can also use the app on your Mac. After you download the app you need to open WhatsApp on your phone, go to Settings and scan the code on your desktop monitor. After this, you will see your WhatsApp messages on your desktop.
13. Total VPN
For accessing some web content that’s locked in certain countries you can use a VPN app. With the free version of Total VPN you will be able to access three locations with a limited usage.
14. Thunderbird
Thunderbird is a great open source email client created by Mozilla that helps you communicate with a lot of people. It offers some amazing features and it can also be used together with Facebook, Twitter and more.
15. Slack
If you have a Mac and don’t know how to communicate with your friends, you should download Slack. You can talk to them via channels about anything you want.
16. Sophos Anti-Virus
Even if Macs don’t have many problems with viruses, Sophos Anti-Virus is a good opportunity to be sure you don’t have any threats on your Mac. This app detects approximately 99% of all threats for free.
Best Apps For Mac Support Free
17. Speedtest by Ookla
If you don’t have the best broadband connection, this app is very useful for any Mac user. You can very easily verify your upload and download speed.
18. Text Wrangler
Best Apps For Mac Support Mac
If you need to write a code or a script on your Mac, you have to download Text Wrangler. This app is the free version of BBEdit and gives you some of its best features.